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>A team at Plymouth University in the UK spent 12 months analysing what happened when a number of synthetic materials were washed at different temperatures in domestic washing machines, using different combinations of detergents, to quantify the microfibres shed. They found that an average washing load of 6 kg could release an estimated 137,951 fibres from polyester-cotton blend fabric, 496,030 fibres from polyester and 728,789 from acrylic. Those fibers add to the general microplastics pollution.
>Polyester is a synthetic petroleum-based fibre, and is therefore a non-renewable carbon-intensive resource.[13] Nearly 70 million barrels of oil are used each year to make polyester around the world, which is now the most commonly used fiber in our clothing. But it takes more than 200 years to decompose.